Tiltable window construction



Sept. 16, 1969 M. J. NARDULLI TILTAB LE WINDOW CONSTRUCTION 2 Sheets-Sheet 1 Filed July 21, 1967 MICHAEL J. NARDULLI INVENTOR.

ATTORNEYS.

Sept. 16, 1969 M. J. NARDULLI 3,466,800

TILTABLE WINDOW CONSTRUCTION lawf W4,

ATTORNEYS.

United States Patent 3,466,800 TILTABLE WINDOW CONSTRUCTION Michael J. Nardulli, 7959 W. Grand Ave, Elmwood Park, Ill. 60635 Filed July 21, 1967, Ser. No. 655,199 Int. Cl. E0511 /22 U.S. Cl. 49174 3 Claims ABSTRACT OF THE DISCLOSURE Double-hung window sashes suspended above their lower end portions from balancing springs, and engaged at the sides by yieldable jamb liners. Inner and outer sashes tiltable inwardly in turn by crowding the liners apart, the lower end portion of the inner sash meeting liner studs-and that of the outer sash the upper ends of liner cut-outsas stops when tilted.

My invention relates to double-hung windows, and more particularly to the type suspended from balancing springs. Various techniques have been employed for rendering the sashes of such windows tiltable into the premises for handy cleaning or removal if a painting or repair job is undertaken. Usually, spring-balanced windows are equipped with fittings attached to sashes or springs, or with costly mechanical contrivances which are intended to operate automatically in order to render the balancing springs inactive when the sashes are tilted. However, these so-called automatic devices are costly and troublesome. Because they include small and intricate parts which often get out of order, service calls using skilled and costly labor have to be made after installation during building construction. Thus, the need is apparent at the consumer level for means which are simple and devoid of moving parts for making the balancing springs inactive when sashes are to be tilted. Building construction procedures also demand rapid means for inserting sashes into frames that will not consume the time of skilled carpenter labor. Further, without means to make balancing springs inactive while tilting sashes, each sash as it is tilted could contract and possibly get out of the track, causing broken glass or insecurity while cleaning. When sashes are removed and the fittings are detached, the balancing springs become released and are apt to contract to a height where they are hard to reach. Thus, the fittings mentioned are usually hard of access, and require more or less skill to connect or disconnect. Tiltable windows of prevalent types therefore present difiiculties unfamiliar and annoying to persons in the building trades or home owners who have limited mechanical skill.

In view of the above situation, it is one object of the present invention to provide a sash installation which permits a sash to be tilted without disconnecting, anchoring, handling or otherwise disposing of the balancing springs.

A further object is to provide a sash installation where a tilted sash remains connected to the balancing springs, and is controlled by inexpensive stops which hold the sash as tilted and prevent the balancing springs from contracting.

A further object is to provide one form of stops for the inner sash and another for the outer one when the tilting of the inner sash into the premises is followed by the tilting of the outer sash above the inner one.

An important object is to design a tiltable sash installation which is neat and wherein no costly mechanical contrivances are present or visible for manual adjustment or attention.

A better understanding of the invention may be gained by reference to the accompanying drawings, in which:

See

FIG. 1 is an elevation of the improved window from the front or outside;

FIG. 2 is an enlarged section on the line 22 of FIG. 1;

FIG. 3 is a view similar to FIG. 2, with the sashes of the window removed;

FIG. 4 is a view similar to FIG. 1, with the inner sash removed;

FIGS. 5 and 6 are, respectively, enlarged sections on the lines 55 and 66 of FIG. 2;

FIG. 7 is a clearer duplication of details in the top portion of FIG. 3;

FIG. 8 is a magnified section of a detail in the leftcenter of FIG. 4;

FIG. 9 is a similar section of a detail in the left-center of FIG. 1;

FIG. 10 is a section on the line 1010 of FIG. 8;

FIG. 11 is a fragmental perspective view of a pair of sashes tilted into the premises, as seen from within; and

FIG. 12 is a similar view showing a sash swung to a diagonal or foreshortened degree for easy reinoval from the window.

Referring specifically to the drawings, 15 denotes the window frame, 15a the jambs in the same, and 15b the sill. The inner sash is indicated at 17, and the outer one at 18.

For the purpose of the present invention the sashes are made-or cut from stock sash-narrower than usual in order to leave vertical spaces between them and the jambs 15; and such spaces are mostly occupied by a pair of extruded vinyl plastic or rolled or extruded sheets of aluminum. FIGS. 3, 4 and 5 show that the liners are spaced from the jambs near the top and bottom by pairs of helical springs 22 which render the liners yieldable in outward directions. The form of the liners 20 to accommodate the window sashes is made clear in FIGS. 5 and 6. Thus, the liners have backsets 20a to seat the side rails of the inner sash. The backsets on the rear side of the window have a bead 20b and an outflange 200, the latter seating against a stop 15b of the window frame. On the frontal side each liner has a lip 20d forming part of an outflange 20e which seats against a stop of the window frame. The backsets 20a form retentive channels for the side rails of the inner sash, while the outer one only has the frontal lip 20d as a stop. However, means are provided for retaining the outer sash in the plane of its travel, as will be explained presently.

FIG. 5 shows that each liner is extended toward the related jamb with a pair of rectangular channels 20) and 20g opposite the side rails of the sashes 17 and 13. The channels form receptacles for a pair of long springs 23 designed for balancing the sashes, two side springs being provided for each sash. FIG. 7 shows that each spring has its upper end-hook 23a engaged in one side of the related channel-2.0 or 20gwhile FIGS. 8 and 10 show that the lower end-loop 23b of the spring is engaged by the upwardly-extended hook 230 of a plate 23 mounted on the shank of a screw 25 driven into the side rail of the related sash near the bottom, a washer 0r pivot roller 2512 being carried by such shank between the plate 23 and the sash.

FIGS. 1 and 4 show that the side rails of the sashes carry cams 27 near the top, the cams being applied to the outer edges of the sashes as shown in FIG. 9. The cams are of slippery plastic material, and are secured to the sashes by flush-headed screws 27a. The center part of FIG. 6 shows that the cams are as wide as the channels, and that the pivot washers 25b are nearly so. Therefore, by projecting into the channels the cams and pivot washers maintain the sashes in alignment with the channels, so that no stops are needed for the rear side of the outer sash.

FIG. 2 shows the positions of the sashes when closed, in which case the balancing springs 23 of the outer sash are in the contracted position, while those of the inner sash are extended. If it is desired to tilt the inner sash into the premises for cleaning or other attention, the sash is first raised to clear the sill, then drawn from the top into the premises. For this action the bottom screws 25a will act as pivots (see FIG. 8) and the cams 27 (see FIG. 6, left) will crowd the liners outwardly and clear them and the beads 20b during the rearward swing of the sash. When the latter has reached the inclined position denoted by dotted lines in the bottom portion of FIG. 2, the bottom portion of the sash will meet a pair of studs 29 projecting inwardly from the liners, as shown in FIGS. 2, 3 and the lower portion of FIG. 4. The inner sash is now in a convenient position for cleaning its frontal side.

When the inner sash has been tilted as just described, the outer sash may also be lowered and tilted in similar manner, such as to the position indicated in FIG. 11 and by dotted lines in FIG. 2, just above that of the inner sash. In this case it is not necessary to provide studs like the studs 29as tilting stops for the sash, as a cutout 20e in the lower part of each lip 2003 will provide a stop 20 for the lower part of the outer sash, as seen in FIG. 2, to check the sash from tilting beyond the position shown. It will be understood that the application of cleaning or other effort on a sash tilted as described will keep it tilted against any tendency of its supporting springs to raise it. When a sash is to be replaced, it is aligned into a liner channel at one side, and then pressed to align with the channel at the other side. FIG. indicates that the round bead b will ease the crowding action of the cams 27 to re-seat the sash.

The installation of the sashes as described also makes it convenient to remove them for painting or repair. FIG. 12 shows that a tilted sash may be swung crosswise to a foreshortened dimension, where the connections of the balancing springs to the sash will be in view. Now the lower end-loops 23b of the springs 23 may be drawn off the hooks 230 to free the sash for removal.

It will now be apparent that the invention embodies a window structure which employs simple sashes made somewhat narrower than standard ones, or sashes existing in the premises by simply sawing their ploughs off from the side rails. The application of a few accessory itemsthe screws 25a and the cams 27-renders the sashes adaptable to the extruded jamb liners and the balancing springs suspended in them. The sashes can then be installed with all hardware concealed, so that to all intents and purposes the window looks and operates like a standard one. However, the present improvement adds the convenience of tilting the sashes into the premises by mere handling as described and without operating or concern about mechanical contrivances or using any tools. Likewise, the invention makes it possible for the sashes to be removed without the need of skill or special effort.

I claim:

1. In a building window the combination with a pair of jambs, and sashes operable vertically therebetween; of liners between the sashes and the jambs, the liners having vertical recesses opposite the sides of the sashes, a pair of balancing springs for each sash located in the recesses adjacent to said sides, the upper ends of the springs secured fixedly and the lower ends pivoted to each sash at points before its lower portion, each sash swingable as pivoted to lower the upper portion into the building, and studs projecting inwardly from the liners and limiting the upswing of the lower portion of the inner sash in such event.

2. In a building window the combination with a pair of jambs, and sashes operable vertically therebetween; of liners between the sashes and the jambs, the liners having vertical recesses opposite the sides of the sashes, a pair of balancing springs for each sash located in the recesses adjacent to said sides, the upper ends of the springs secured fixedly and the lower ends pivoted to each sash at points before its lower portion, each sash swingable as pivoted to lower its upper portion into the building, and inward lips from the front ends of the liners with cut-outs in the lower parts, the upper edges of said cut-outs serving as stops to limit the upswing of the lower portion of the outer sash in such event.

3. In a building window the combination with a pair of jambs, and sashes with flat side edges operable vertically between the jambs, and a pair of outwardly-yieldable liners between the sashes and the jambs, the liners having vertical guides seating said side edges and vertical recesses in the guides; of convex cams projecting from said edges to substantially fill the entrances of said recesses and aline the sashes therewith for vertical travel, and a pair of balancing springs for each sash suspending it near the bottom for swinging departure from the liners, the latter yielding to the pressure of the cams in such event.

References Cited UNITED STATES PATENTS 994,015 5/1911 Lunken et a1 49174 2,103,015 12/1937 Peters 49174 X 2,119,199 5/1938 Buchach 49181 2,287,741 6/1942 Levyn 49174 X 2,308,621 11/1943 Levyn 49181 X 2,828,514 4/1958 Nardulli 49174 3,118,190 1/1964 Love 49174 FOREIGN PATENTS 167,420 4/1956 Australia.

DENNIS L. TAYLOR, Primary Examiner US. Cl. X.R. 49 414 

